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Answer:
THE PRINCIPAL IS ₹8000
Step-by-step explanation:
LET THE PRINCIPAL BE P
SO,
WE KNOW,
A=P(1+R/100)^N
P+820=P(1+5/100)^2
P+820=P(21/20)^2
P+820=441P/400
400(P+820)=441P
400P+328000=441P
328000=441P-400P
328000=41P
P=328000/41
P=₹8000
I HOPE YOU UNDERSTOOD THE QUESTION